11819839 has 2 divisors, whose sum is σ = 11819840. Its totient is φ = 11819838.

The previous prime is 11819833. The next prime is 11819887. The reversal of 11819839 is 93891811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11819839 - 2³ = 11819831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11819831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909919 + 5909920.

It is an arithmetic number, because the mean of its divisors is an integer number (5909920).

Almost surely, 2^11819839 is an apocalyptic number.

11819839 is a deficient number, since it is larger than the sum of its proper divisors (1).

11819839 is an equidigital number, since it uses as much as digits as its factorization.

11819839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 40.

The square root of 11819839 is about 3437.9992728330. Note that the first 3 decimals coincide. The cubic root of 11819839 is about 227.7913282617.

The spelling of 11819839 in words is "eleven million, eight hundred nineteen thousand, eight hundred thirty-nine".